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30mA Inverting Charge Pump in SOT23 for EMI-Sensitive Automotive Applications

Low-EMI, Automotive-Qualified Charge Pump in SOT23 Package that Operates at 105°C

Product Details

Key Features

Parametric specs for Charge Pumps
Topology Inverter
VIN (V) (min) 1.4
VIN (V) (max) 5.5
IOUT (A) (typ) 0.03
Unadj. VOUT (V) -VIN
IQ (mA) (max) 1.7
Switching Frequency (kHz) 125
Oper. Temp. (°C) -40 to +105
Package/Pins SOT23/6
Budgetary
Price (See Notes)
1.81
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Simplified Block Diagram

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Parameters

Parametric specs for Charge Pumps
Topology Inverter
VIN (V) (min) 1.4
VIN (V) (max) 5.5
IOUT (A) (typ) 0.03
Unadj. VOUT (V) -VIN
IQ (mA) (max) 1.7
Switching Frequency (kHz) 125
Oper. Temp. (°C) -40 to +105
Package/Pins SOT23/6
Budgetary
Price (See Notes)
1.81

Key Features

  • +1.4V to +5.5V Input Voltage Range
  • 30mA Guaranteed Output Current at +105°C
  • Slew-Rate Limited to Reduce EMI
  • 0.1µA Logic-Controlled Shutdown
  • Low 12Ω Output Resistance
  • Startup Current Limited
  • 6-Pin SOT23 Package
  • AEC-Q100 Qualified

Applications/Uses

  • Automotive and Industrial Equipment
  • GaAsFET Bias Supplies
  • Handy-Terminals, PDAs
  • Negative Supply from +5V or +3.3V Logic Supplies
  • Small LCD Panels

Description

The MAX16945 ultra-small, monolithic, CMOS charge-pump voltage inverter accepts an input voltage ranging from +1.4V to +5.5V. This device features an ultra-low 12Ω output resistance, permitting loads of up to 30mA at +105°C with maximum efficiency. The MAX16945 operates at a frequency of 125kHz, allowing use of small external components. Its small external components, micropower shutdown mode, and wide temperature range make this device ideal for both automotive and industrial applications.

Oscillator control circuitry and four power MOSFET switches are included on-chip. The MAX16945 comes in a 6-pin SOT23 package and operates over -40°C to +105°C.

Simplified Block Diagram

MAX16945: Typical Operating Circuit MAX16945: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.